Spectrophotometric Determination of carvedilol Via Oxidative Coupling Reaction

Abstract

A new, simple and sensitive spectrophotometric method for the determination of catechol and resorcinol has been developed. The method is based on the reaction of catechol and resorcinol with2,4-di nitrophenyl hydrazine to yield orange-colored products respectively. catechol and resorcinol showed maximum absorbance at385 nm and 404nm with linearity was observed in the concentration range of (1-40 µg/mL) for catechol, and (1-25 µg/mL) for resorcinol with correlation coefficient (0.9982) for both compounds, Sandell's sensitivity 0.0216 (μg cm -2 ) and 0.025 (μg cm -2 ) respectively.

MOF derived metal oxide nanohybrids with in situ grown rGO: a smart material for simultaneous electrochemical sensing of HQ and RS

“…Detecting phenolic compounds, including HQ and RS, presents challenges in analytical chemistry. Various approaches have been explored, such as high-performance liquid chromatography (HPLC), 4 spectrophotometry, 5 fluorescence, 6 chemiluminescence, 7 capillary electrochromatography, 8 gas chromatography/mass spectrometry, 9 and electroanalytical methods, among others. Despite their utility, these techniques are often marred by complexities in sample preparation, time-intensive procedures, and high costs.…”

Disposable Pencil Lead as an Electrochemical Transducer for Monitoring Catechol in River and Tap Water

“…So far, various laboratory-based techniques have been routinely applied to quantify catechol, such as high-performance liquid chromatography (HPLC) [5], gas chromatographymass spectrophotometry (GC-MS) [6], spectrophotometry [7], electrochemiluminescence [8],…”

Determination of 2,4-dinitrophenylhydrazine using carbon paste modified with nanoparticles by cyclic voltammetry, high-performance liquid chromatography and spectrophotometry methods

“…It is used in the analysis of amino acids [17], aldehydes in air [18], total carbonyl in meat [19], and aldehydes in food samples [20]. In spectrophotometry, it is also used as a reagent in the analysis of many drugs using spectrophotometry [21][22][23][24], such as tetracycline hydrochloride [25], catechol, resorcinol [26], and nateglinide as a drug for the treatment of diabetes [27]. Interaction of haloperidol and 2,4-Dinitrophenylhydrazine used for the quantification in drug formulations [28], spectroscopic, cytotoxicity and molecular docking s tudies on the interaction between 2,4-dinitrophenylhydrazine derived Schiff bases with bovine serum albumin [29] at a wavelength near 360 nm [30].…”